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Debt And Related Expenses (Schedule of WPX Debt assumed with the Merger) (Details) - WPX $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($)
Debt Instrument [Line Items] |  |
Face Value | $ 3,257 |
Fair Value | 3,562 |
6.00% due January 15, 2022 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | 43 |
Fair Value | 44 |
8.25% due August 1, 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | 242 |
Fair Value | $ 281 |
Optional Redemption | Jun. 01, 2023 | [1]
5.25% due September 15, 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | $ 472 |
Fair Value | $ 530 |
Optional Redemption | Jun. 15, 2024 | [1]
5.75% due June 1, 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | $ 500 |
Fair Value | $ 529 |
Optional Redemption | Jun. 01, 2021 | [1]
5.25% due October 15, 2027 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | $ 600 |
Fair Value | $ 646 |
Optional Redemption | Oct. 15, 2022 | [1]
5.875% due June 15, 2028 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | $ 500 |
Fair Value | $ 554 |
Optional Redemption | Jun. 15, 2023 | [1]
4.50% due January 15, 2030 [Member] |  |
Debt Instrument [Line Items] |  |
Face Value | $ 900 |
Fair Value | $ 978 |
Optional Redemption | Jan. 15, 2025 | [1]
[1] | At any time prior to these dates, Devon has or had the option to redeem (i) some or all of the notes at a specified "make whole" premium and (ii) a portion of certain of the notes at applicable redemption prices, in each case as described in the indenture documents governing the notes to be redeemed. On or after these dates, Devon has or had the option to redeem the notes, in whole or in part, at the applicable redemption prices set forth in the indenture documents, plus accrued and unpaid interest thereon to the redemption date as more fully described in such documents.

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